APA (7th ed.) Citation

Jespersen, O. (1962). Essentials of English grammar (1st published, repr.). George Allen & Unwin.

Chicago Style (17th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. 1st published, repr. London: George Allen & Unwin, 1962.

MLA (9th ed.) Citation

Jespersen, Otto. Essentials of English Grammar. 1st published, repr. George Allen & Unwin, 1962.

Warning: These citations may not always be 100% accurate.